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貨期:
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用途:
For Research Use Only. Not for use in diagnostic or therapeutic procedures.
E1-like enzyme which specifically catalyzes the first step in ufmylation. Activates UFM1 by first adenylating its C-terminal glycine residue with ATP, and thereafter linking this residue to the side chain of a cysteine residue in E1, yielding a UFM1-E1 thioester and free AMP. Activates UFM1 via a trans-binding mechanism, in which UFM1 interacts with distinct sites in both subunits of the UBA5 homodimer. Trans-binding also promotes stabilization of the UBA5 homodimer, and enhances ATP-binding. Transfer of UFM1 from UBA5 to the E2-like enzyme UFC1 also takes place using a trans mechanism. Ufmylation is involved in reticulophagy (also called ER-phagy) induced in response to endoplasmic reticulum stress. Ufmylation is essential for erythroid differentiation of both megakaryocytes and erythrocytes.
基因功能參考文獻(xiàn):
UFM1 His 70 resembles UBA5 His336 and enters a negatively charged pocked on the other UFM1 molecule. PMID: 28360427
These findings explicitly elucidate the role of UBA5 dimerization in UFM1 activation. PMID: 27653677
Heterozygous mutations in the UBA5 gene in two sisters with early-onset epileptic encephalopathy . PMID: 28965491
Biallelic Variants in UBA5 Link Dysfunctional UFM1 Ubiquitin-like Modifier Pathway to Severe Infantile-Onset Encephalopathy PMID: 27545674
clinical, biochemical, and experimental findings support our finding of UBA5 mutations as a pathophysiological cause for early-onset encephalopathies due to abnormal protein ufmylation PMID: 27545681
study provides important structural and functional insights into the interaction between UBA5 and Ub-like modifiers, improving the understanding of the biology of the ufmylation pathway. PMID: 26929408
The study of UBA5-R246X revealed a dramatically decreased half-life and loss of UFM1 activation due to the absence of the catalytic cysteine Cys250. PMID: 26872069
Uba5 residues 364-404 were demonstrated to be necessary for the transthiolation of Ufm1 to Ufc1, and Uba5 381-404 was identified to be the minimal region for Ufc1 recognition PMID: 25084390
Crystallization of Uba5 residues 57-363 was performed at 277 K using PEG 3350 as the precipitant, and crystals optimized by microseeding diffracted to 2.95 A resolution, with unit-cell parameters a=b=97.66, c=144.83 A, alpha=beta=90, gamma=120 degrees . PMID: 24915089
binding of ATP to Uba5 approximately Ufm1 thioester was required for efficient transfer of Ufm1 from Uba5 to Ufc1 via transthiolation. PMID: 24966333
Studies reveal structural features of UBA5 that further understanding of the enzyme reaction mechanism and provide insight into the evolution of ubiquitin activation. PMID: 20368332
UBE1DC1 greatly activated SUMO2 in the nucleus or transferred activated-SUMO2 to nucleus after it conjugated SUMO2 in the cytoplasm. PMID: 18442052